The issue was closed as a duplicate - check the existing issues before opening a new one. Sorry if I failed to link the duplicate.

The backend code is not yet ready to be made publicly available.

> We don't know what informations are kept.

Everything that is being sent by the extension (you can see it in network tab). Unique (but random and non-identifiable) userId, videoId that you voted for and your vote.

Privacy policy is coming. It's just that I'm doing this mostly alone, and writing a huge legally-binding text in English takes some time.